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- W2040679291 abstract "Bradykinin coronary outflow, left ventricular performance and left ventricular dimensions of transgenic rats harboring the human tissue kallikrein-1 gene TGR(hKLK1) were investigated under basal and ischemic conditions. Bradykinin content in the coronary outflow of buffer-perfused, isolated hearts of controls and TGR(hKLK1) was measured by specific radioimmunoassay before and after global ischemia. Left ventricular function and left ventricular dimensions were determined in vivo using a tip catheter and echocardiography 6 days and 3 weeks after induction of myocardial infarction. Left ventricular type I collagen mRNA expression was analyzed by RNase protection assay. Compared to controls, basal bradykinin outflow was 3.5 fold increased in TGR(hKLK1). Ischemia induced an increase of bradykinin coronary outflow in controls but did not induce a further increase in TGR(hKLK1). However, despite similar unchanged infarction sizes, left ventricular function and remodeling improved in TGR(hKLK1) after myocardial infarction, indicated by an increase in left ventricular pressure (+ 34%; P < 0.05), contractility (dp/dt max. + 25%; P < 0.05), and in ejection fraction (+ 20%; P < 0.05) as well as by a reduction in left ventricular enddiastolic pressure (− 49%, P < 0.05), left ventricular enddiastolic diameter (− 20%, P < 0.05), and collagen mRNA expression (− 15%, P < 0.05) compared to controls. A chronically activated transgenic kallikrein kinin system with expression of human kallikrein-1 gene counteracts the progression of left ventricular contractile dysfunction after experimental myocardial infarction. Further studies have to show whether these results can be caused by other therapeutically options. Long acting bradykinin receptor agonists might be an alternative option to improve ischemic heart disease." @default.
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- W2040679291 date "2006-11-01" @default.
- W2040679291 modified "2023-10-17" @default.
- W2040679291 title "Cardiac function and remodeling is attenuated in transgenic rats expressing the human kallikrein-1 gene after myocardial infarction" @default.
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- W2040679291 doi "https://doi.org/10.1016/j.ejphar.2006.08.054" @default.
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